JP3291709B2 - Signal monitoring method for subscriber line and inter-office common line of intelligent network system service - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to an intelligent network (hereinafter, abbreviated as IN).
In order to determine the cause of the failure report for various services defined by the customer (customer), the customer's service specification is analyzed for the signal monitor of the subscriber line and the common line between stations, and the correct signal sequence is analyzed. And compare it with the monitoring result to determine the normality of the signal sequence of the monitoring result and identify the abnormal location. When the abnormal location is identified, output the corresponding fault recovery measures. The present invention relates to a signal monitoring method which enables the following.

[0002]

2. Description of the Related Art A conventional telephone network is constructed for the purpose of providing a basic telephone service, and is not always optimal for providing a so-called advanced telephone service. For this reason, it is necessary to improve the network in order to quickly and flexibly provide network services that are expected to be increasingly diversified in the future. From this point of view, the concept of IN has been proposed and has already been realized in some countries.

A conventional signal monitoring method for a subscriber line and an inter-station common line in IN will be described with reference to FIGS. Regarding IN, for example, Minoru Koyama and Kazuhiko Ogawa, "The Current State of Intelligent Networks", 1991,
Joint Conference of the Institute of Electrical and Information Engineers, S23-3 and Shigehiko Suzuki's "Advanced Technology for Intelligent Network Services", 1991, Joint Conference of the Institute of Electrical and Information Engineers, S23
-4. The configuration of IN will be described with reference to FIG. IN is SMS (Service Management System) 1, SCP (Service Control Po
int: service control node) 2, SSP (Service Swit)
ching Point: switching node) 3. The customer terminal 4 is connected to the SMS through the data transfer network, and the service specification is transmitted from the customer terminal 4 to the SM of IN.
S is registered. The user terminal is connected to the SSP 3 via a subscriber line. Note that a customer refers to a person who defines and provides a service in IN, a user refers to a person who uses a service provided by the customer, and a connection procedure refers to a connection such as an outgoing connection and an incoming connection. The condition at the time of communication refers to conditions such as the telephone number of the caller, the caller's area, and the caller's time.

[0004] SMS updates data such as customer service specifications required to execute a service control function, and performs SCP.
It manages various operation information received from. The SCP interprets the service specification of the customer, and realizes the communication service by instructing the SSP through the inter-station common line signaling network to perform a connection control operation according to the service specification. SSP is S
In accordance with an instruction from the CP, actual hardware is driven to perform a connection control operation, and the function of realizing the communication service is shared.

[0005] The service specification is registered in the IN SMS from the customer terminal 4, and an example of an image of the service specification is shown in FIG. This is because, for example, if the transmission date of the information transmitted from the caller terminal is not Sunday, the caller terminal is connected to the receiver terminal 1, and if the transmission date is Sunday, the caller terminal is switched depending on the time zone. Until the hour, the terminal is connected to the terminal 2 where the called party is present, and is connected to the mailbox at other times.

A conventional signal monitoring method will be described with reference to FIG. In IN, the signal monitoring system 5 of the subscriber line and the inter-station common line according to the prior art method uses the signal monitor information acquisition unit 7 to designate the SSP 3 by specifying the communication conditions and the like obtained by reporting the failure and subscribe. The monitoring instruction of the signal of the common line between the user and the station is instructed, and the monitoring result executed in SSP3 is received. The determination of the normality of the signal sequence of the monitoring result and the identification of the abnormal part are performed by storing a fixed number of correct signal sequences in advance in the DB (database) 8 in the monitor system for each connection procedure, and Search the DB according to the connection procedure obtained in the failure report, extract the correct signal sequence of the connection procedure,
This is performed by comparing the signal sequence of the monitoring result with the signal sequence within the range of fixed information determined for each connection procedure for each signal. Therefore, when the connection procedure cannot be specified due to the failure report, it is impossible to determine the normality of the signal sequence of the monitoring result and specify the abnormal part.

[0007]

In the service defined by the customer in IN, the connection procedure is different for each combination of the service specification defined by the customer and the condition at the time of communication. Can not specify the connection procedure. In the conventional method, it is impossible to determine the normality of the signal monitoring result and specify an abnormal part for such communication.

According to the present invention, even when the connection procedure cannot be specified due to the failure report, the correct signal sequence of the subscriber line and the inter-station common line signal in the failure report is determined based on the communication conditions obtained in the failure report. A system is provided that enables the determination of the normality of a signal sequence of a monitoring result and the identification of an abnormal part by creating and comparing the signal sequence with the monitoring result.

[0009]

In order to solve the above problems, the present invention has the following means. That is, (1) information for identifying a service specification is extracted from communication conditions obtained by a failure report, and SMS is determined based on this information.
(2) Next, under the conditions at the time of the communication, the obtained service specification is analyzed, the connection procedure in the failure report is specified, and the correct signal sequence ( Fixed information determined for each connection procedure is set for each signal), and information of each signal determined for each communication is mapped to this based on communication conditions, and a correct signal sequence in the failure report is selected. Create By this means, it is possible to create a correct signal sequence for a connection procedure that differs for each communication condition and service specification defined by the customer of IN, which was impossible with the conventional method. (3) Next, the SSP is instructed to monitor the signal of the subscriber line and the common line between the stations by designating the communication condition, and
The monitoring result performed in P is received. (4) The signal of the subscriber line and the common line between the stations in the failure report is compared with the signal sequence of the monitor result obtained in (3) and the correct signal sequence created in (2) to obtain the monitor result. (5) When the abnormal point is specified based on the result, the normality of the signal sequence is determined and the abnormal point is specified.
A fault recovery measure corresponding to the abnormal location is output.

An embodiment of the present invention will be described below in detail with reference to the drawings. In the drawings, the same elements have the same reference symbols.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Consider an embodiment assuming the following service specifications as a premise. The service specification is described in a machine language that can be executed in an interpretive manner on the SCP, and is composed of an array of service definition components including an instruction part and parameters. There are two types of service definition components, one of which actually performs call control (connection between the calling terminal and the called terminal, connection between the calling terminal and the mailbox, etc.), and corresponds to the connection procedure. This is a network control component for which only one signal sequence is determined, and the other is a general component for preparing parameters required by the network control component.

At the time of actual communication, a signal from calling to disconnection is generated by one or a combination of a plurality of network control components described in the service specification according to communication conditions. The sequence is determined.

Next, the device configuration of the signal monitoring system will be described with reference to FIG. A signal monitoring system 9 for a subscriber line and a common line between stations to which the signal monitoring method of the present invention is applied,
It comprises a communication device 10, a signal monitor analysis processing device 11, and a DB 16, and each device will be described below.

The communication device 10 exchanges information with the SMS 1 and the SSP 3 via a data communication network. The signal monitor analysis device 11 accesses the SMS 1 to acquire the service specifications of the customer, and the service specification acquisition unit 12 sequentially interprets and executes the service specifications to start the call under the communication conditions obtained by the failure report. A service specification analysis unit 13 for creating a series of correct signal sequences up to disconnection, and signal monitor information for receiving a monitor result after issuing a monitor instruction to the SSP by specifying communication conditions obtained by reporting a failure. Acquisition unit 15,
The failure analysis unit 14 compares the signal sequence of the monitor result with the created correct signal sequence to determine the normality of the signal sequence of the monitor result and to specify an abnormal part. The DB 16 stores subscriber line and common line signal sequence information transmitted and received in an actual network corresponding to network control components.

The operation of the signal monitoring system shown in FIG. 4 will be described with reference to FIGS. FIG. 5 shows input of information necessary for the signal monitor analysis processing. In order to specify a service specification and a signal sequence to be tested, communication conditions are input from an operator. Table 1 shows examples of communication conditions.

[Table 1] Shown in

FIG. 6 shows acquisition of a service specification.
The service specification acquisition unit 12 accesses the SMS 1 based on the identification information of the service specification (telephone number of the called party, transmission date and time, etc.) in the communication conditions to acquire the service specification.

FIG. 7 illustrates the creation of the correct signal sequence. (A) The service specification analysis unit 13 prepares takeover parameters for network control components by sequentially interpreting and executing general components in the order described in the service specifications based on communication conditions. . (B) Subsequently, the network specification component in which the service specification is described is executed by the service specification analysis unit 13, and a signal sequence corresponding to the network control component is accessed and extracted from the DB 16. (C) Next, the takeover parameters prepared in (a) are
A corresponding signal field is set in a corresponding field of each signal in the signal sequence extracted in (b) to create a correct signal sequence. By sequentially repeating (a)-(c) in accordance with the service specification, a series of signal sequences from calling to disconnection of the test object are created.

FIG. 8 shows a monitor of a signal under test in an actual network. The signal monitor acquisition unit 15 instructs the SSP to specify signal monitoring conditions and instructs signal monitoring to be performed based on communication conditions, and receives a signal sequence as a result of monitoring performed by the SSP. Table 2 shows examples of monitor conditions instructing the SSP.

[Table 2] Shown in

FIG. 9 shows the determination of the normality of the signal sequence of the monitoring result and the identification of the abnormal part. The failure analysis processing unit 14 compares the correct signal sequence created in the above-described step of creating the correct signal sequence with the signal sequence of the monitoring result obtained by monitoring the signal under test in the actual network, and checks the normality. Is determined and an abnormal part is specified, and the result of the abnormality analysis is notified to the operator. Further, when an abnormal point is specified, the operator is notified of a failure recovery measure corresponding to the abnormal point.

[0020]

As described above, in an IN-related service which provides various services with the advancement of communication services, for a communication service having a different signal sequence for each service specification described by a customer, the normality of a signal monitoring result is obtained. By realizing a signal monitoring method that enables determination and identification of an abnormal part, it is possible to shorten the time required to isolate a failure and to reduce the number of operations for failure handling.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of IN.

FIG. 2 is a diagram illustrating an example of a service specification defined by a customer;

FIG. 3 is a block diagram of a conventional signal monitoring system.

FIG. 4 is a block diagram of an embodiment of the present invention.

FIG. 5 is a diagram showing a signal monitor analysis process.

FIG. 6 is a diagram illustrating acquisition of a service specification.

FIG. 7 illustrates the creation of a correct signal sequence.

FIG. 8 is a diagram showing monitoring of a signal under test in an actual network.

FIG. 9 is a diagram illustrating determination of normality of a signal sequence and identification of an abnormal part based on a monitoring result.

[Explanation of symbols]

 Reference Signs List 1 SMS (Service Management System) 2 SCP (Service Control Node) 3 SSP (Exchange Node) 4 Customer Terminal 5 Conventional Signal Monitoring System 6 Conventional Failure Analysis Unit 7 Signal Monitor Information Acquisition Unit 8 Signal Sequence Information Storage DB 9 Signal monitoring system of the present invention 10 Communication device 11 Signal monitor analysis processing device 12 Service specification acquisition unit 13 Service specification analysis unit 14 Failure analysis unit of the present invention 15 Signal monitor information acquisition unit 16 Signal sequence information storage DB

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-5-260175 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) H04L 12/56 400

Claims (1)

(57) [Claims] 1. A user terminal, a switching node for accommodating the user terminal via a subscriber line, a service control station for connecting the switching node through an interoffice common line signal network, the service control station and a customer terminal In a communication network having a service management system for connecting a subscriber line through a data transfer network, a signal monitoring method for a subscriber line and an inter-office common line of an intelligent network capable of defining a service by a customer: (1) Service specification obtained by reporting a failure (2) Analyze the acquired service specification under the conditions of the failure report to create a correct signal sequence, and Communication is actually performed under the conditions of the failure report, and signal monitoring of the subscriber line and inter-station common line in this communication is performed. (4) comparing the correct signal sequence created from the service specification with the signal sequence of the monitor result, determining the normality of the signal sequence of the monitor result and specifying the abnormal part, and (5) Outputting a failure recovery measure corresponding to the abnormal location when the abnormal location is identified.